http://www.wurth.com.au/msds/1893_910_15.htm

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
APPEARANCE
Woven glass fibre fabric tape; insoluble in water.

INHALED
The dust may produce upper respiratory tract discomfort. Nose and throat discomfort may be transitory. Cutting and trimming may result in fibre dislodgement and dust production.
Loose and granular forms produce more dust than preforms (batts) but handling of batts results in fibre dislodgement and dusting. There is little evidence for acute toxicity after inhalation of mineral fibres. Rockwool/ glasswool administered by inhalation produce little fibrosis in experimental animals [IARC Monograph 43].
Effects on lungs are significantly enhanced in the presence of respirable particles. Overexposure to respirable dust may produce wheezing, coughing and breathing difficulties leading to or symptomatic of impaired respiratory function

CHRONIC HEALTH EFFECTS
Loose and granular forms produce more dust than preforms (batts) but handling of batts results in fibre dislodgement and dusting. There is little evidence for acute toxicity after inhalation of MMMF. Rockwool/glasswool administered by inhalation produces little
pulmonary fibrosis in experimental animals. [IARC Monograph 43].


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Note added at 2 hrs 11 mins (2005-11-27 15:31:23 GMT)
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http://www.uspto.gov/go/classification/uspc264/defs264.htm
SECTION V - GLOSSARY
BATT
A term of art for a web or sheet of material generally formed by random interfelting of mass deposited discrete fibers or from tangled or matted filaments, e.g., cotton batting.
PREFORM
An article or stock material or bland which is self sustaining and which may be subjected to a shaping or reshaping operation.


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Note added at 2 hrs 14 mins (2005-11-27 15:34:26 GMT)
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diz. Hoepli
batting = cotone in fogli per imbottiture.

Quindi userei ***** FOGLI *****